People in ancient times tried many ways to claim a bring rain EXCEPT FOR . [br]

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问题 People in ancient times tried many ways to claim a bring rain EXCEPT FOR . [br] This passage is mainly about ______.

选项 A、the history of rainmaking
B、the failure of rainmaking
C、the success of rainmaking
D、the idea of rainmaking

答案 A

解析主旨题。文章从古代人类求雨讲到现代人类尝试人工降雨，再到1946年Vincent J. Schaefer真正实现人工降雨，说明文章的主旨是介绍人工降雨的历史。

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